From: redi <redi@138bc75d-0d04-0410-961f-82ee72b054a4>
Date: Tue, 10 Nov 2015 15:12:24 +0000 (+0000)
Subject: Fix return type of heterogeneous find for sets
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=662cff364f23a791c14ccd80801b9a1d4ad781f0;p=thirdparty%2Fgcc.git

Fix return type of heterogeneous find for sets

	PR libstdc++/68190
	* include/bits/stl_multiset.h (multiset::find): Fix return types.
	* include/bits/stl_set.h (set::find): Likewise.
	* testsuite/23_containers/map/operations/2.cc: Test find return types.
	* testsuite/23_containers/multimap/operations/2.cc: Likewise.
	* testsuite/23_containers/multiset/operations/2.cc: Likewise.
	* testsuite/23_containers/set/operations/2.cc: Likewise.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@230113 138bc75d-0d04-0410-961f-82ee72b054a4
---

diff --git a/libstdc++-v3/ChangeLog b/libstdc++-v3/ChangeLog
index 76d982aa8f05..5d41876ac579 100644
--- a/libstdc++-v3/ChangeLog
+++ b/libstdc++-v3/ChangeLog
@@ -1,5 +1,13 @@
 2015-11-10  Jonathan Wakely  <jwakely@redhat.com>
 
+	PR libstdc++/68190
+	* include/bits/stl_multiset.h (multiset::find): Fix return types.
+	* include/bits/stl_set.h (set::find): Likewise.
+	* testsuite/23_containers/map/operations/2.cc: Test find return types.
+	* testsuite/23_containers/multimap/operations/2.cc: Likewise.
+	* testsuite/23_containers/multiset/operations/2.cc: Likewise.
+	* testsuite/23_containers/set/operations/2.cc: Likewise.
+
 	* doc/xml/manual/status_cxx2017.xml: Update.
 	* doc/html/*: Regenerate.
 
diff --git a/libstdc++-v3/include/bits/stl_multiset.h b/libstdc++-v3/include/bits/stl_multiset.h
index 5ccc6dd61f72..e6e233772b32 100644
--- a/libstdc++-v3/include/bits/stl_multiset.h
+++ b/libstdc++-v3/include/bits/stl_multiset.h
@@ -680,13 +680,15 @@ _GLIBCXX_BEGIN_NAMESPACE_CONTAINER
 #if __cplusplus > 201103L
       template<typename _Kt>
 	auto
-	find(const _Kt& __x) -> decltype(_M_t._M_find_tr(__x))
-	{ return _M_t._M_find_tr(__x); }
+	find(const _Kt& __x)
+	-> decltype(iterator{_M_t._M_find_tr(__x)})
+	{ return iterator{_M_t._M_find_tr(__x)}; }
 
       template<typename _Kt>
 	auto
-	find(const _Kt& __x) const -> decltype(_M_t._M_find_tr(__x))
-	{ return _M_t._M_find_tr(__x); }
+	find(const _Kt& __x) const
+	-> decltype(const_iterator{_M_t._M_find_tr(__x)})
+	{ return const_iterator{_M_t._M_find_tr(__x)}; }
 #endif
       //@}
 
diff --git a/libstdc++-v3/include/bits/stl_set.h b/libstdc++-v3/include/bits/stl_set.h
index cf74368fa0e1..8bea61a3b23f 100644
--- a/libstdc++-v3/include/bits/stl_set.h
+++ b/libstdc++-v3/include/bits/stl_set.h
@@ -699,13 +699,15 @@ _GLIBCXX_BEGIN_NAMESPACE_CONTAINER
 #if __cplusplus > 201103L
       template<typename _Kt>
 	auto
-	find(const _Kt& __x) -> decltype(_M_t._M_find_tr(__x))
-	{ return _M_t._M_find_tr(__x); }
+	find(const _Kt& __x)
+	-> decltype(iterator{_M_t._M_find_tr(__x)})
+	{ return iterator{_M_t._M_find_tr(__x)}; }
 
       template<typename _Kt>
 	auto
-	find(const _Kt& __x) const -> decltype(_M_t._M_find_tr(__x))
-	{ return _M_t._M_find_tr(__x); }
+	find(const _Kt& __x) const
+	-> decltype(const_iterator{_M_t._M_find_tr(__x)})
+	{ return const_iterator{_M_t._M_find_tr(__x)}; }
 #endif
       //@}
 
diff --git a/libstdc++-v3/testsuite/23_containers/map/operations/2.cc b/libstdc++-v3/testsuite/23_containers/map/operations/2.cc
index 6cc277aedcef..ef301ef136c3 100644
--- a/libstdc++-v3/testsuite/23_containers/map/operations/2.cc
+++ b/libstdc++-v3/testsuite/23_containers/map/operations/2.cc
@@ -54,6 +54,11 @@ test01()
   VERIFY( cit == cx.end() );
 
   VERIFY( Cmp::count == 0);
+
+  static_assert(std::is_same<decltype(it), test_type::iterator>::value,
+      "find returns iterator");
+  static_assert(std::is_same<decltype(cit), test_type::const_iterator>::value,
+      "const find returns const_iterator");
 }
 
 void
diff --git a/libstdc++-v3/testsuite/23_containers/multimap/operations/2.cc b/libstdc++-v3/testsuite/23_containers/multimap/operations/2.cc
index 67c3bfd60a38..eef6ee4515d7 100644
--- a/libstdc++-v3/testsuite/23_containers/multimap/operations/2.cc
+++ b/libstdc++-v3/testsuite/23_containers/multimap/operations/2.cc
@@ -54,6 +54,11 @@ test01()
   VERIFY( cit == cx.end() );
 
   VERIFY( Cmp::count == 0);
+
+  static_assert(std::is_same<decltype(it), test_type::iterator>::value,
+      "find returns iterator");
+  static_assert(std::is_same<decltype(cit), test_type::const_iterator>::value,
+      "const find returns const_iterator");
 }
 
 void
diff --git a/libstdc++-v3/testsuite/23_containers/multiset/operations/2.cc b/libstdc++-v3/testsuite/23_containers/multiset/operations/2.cc
index ff2748f713a0..4bea719160f4 100644
--- a/libstdc++-v3/testsuite/23_containers/multiset/operations/2.cc
+++ b/libstdc++-v3/testsuite/23_containers/multiset/operations/2.cc
@@ -54,6 +54,11 @@ test01()
   VERIFY( cit == cx.end() );
 
   VERIFY( Cmp::count == 0);
+
+  static_assert(std::is_same<decltype(it), test_type::iterator>::value,
+      "find returns iterator");
+  static_assert(std::is_same<decltype(cit), test_type::const_iterator>::value,
+      "const find returns const_iterator");
 }
 
 void
diff --git a/libstdc++-v3/testsuite/23_containers/set/operations/2.cc b/libstdc++-v3/testsuite/23_containers/set/operations/2.cc
index 84ddd1f1ddce..6a68453ec7bf 100644
--- a/libstdc++-v3/testsuite/23_containers/set/operations/2.cc
+++ b/libstdc++-v3/testsuite/23_containers/set/operations/2.cc
@@ -54,6 +54,11 @@ test01()
   VERIFY( cit == cx.end() );
 
   VERIFY( Cmp::count == 0);
+
+  static_assert(std::is_same<decltype(it), test_type::iterator>::value,
+      "find returns iterator");
+  static_assert(std::is_same<decltype(cit), test_type::const_iterator>::value,
+      "const find returns const_iterator");
 }
 
 void